Answer:
X = 2,097,152
Step-by-step explanation:
So were gonna do PEMDAS/Order of operations (Parenthesis, Exponents, Multiplication and Division, Addition and Subtraction from left to right)
First since theirs no Parenthesis's were gonna skip to Exponents. (Remember that Exponents is not 2 * 21!!)
First we're gonna do
2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 =
2,097,152
Next we're gonna do the other Exponent
2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 =
1,048,576
Lastly is to recreate the problem
2^21 = x + 2^20
v v
2,097,152 | 1,048,576
~~~~~~~~~~
2,097,152 + 1,048,576 = 3,145,728
To check this we can do
3,145,728 ÷ 1,048,576 = 2,097,152
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope it helps you : )
